Pulling in PR: 466, 468, 470, 471 from aws-fpga (#586)

* Remove duplicate line (#468)

* Correct path for helloworld example (#466)

In xilinx_2019.1 @ 0ec1aef (and not previous versions) the hello world example is located in $SDACCEL_DIR/examples/xilinx/getting_started/hello_world/helloworld_ocl/ rather than $SDACCEL_DIR/examples/xilinx/getting_started/host/helloworld_ocl/

* Update path (#470)

* Update path

Attempting to change directories into this path (i.e., `/home/centos/src/project_data/aws-fpga/SDAccel/examples/xilinx_2017.4/getting_started/host/helloworld_ocl`) draws an error because the `xilinx_2017.4` directory is empty, now, and `xilinx` is a symbolic link that points to the latest release (i.e., `/home/centos/src/project_data/aws-fpga/SDAccel/examples/xilinx_2019.1`).  Additionally: `helloworld_ocl` is no longer a sub-directory of `host`; it's now a sub-directory of `hello_world`: so this part of the path should be updated as well.

* Fix unset flags

The alphanumeric part of these flags (i.e., `f`) are preceded by en dashes, when they should be hyphens; as using the former instead of the later results in errors (`-bash: unset: ``–f': not a valid identifier`).

* Update path to workspace directory

This change is consistent with 48c3048, and the basename of the image, but has a different filename extension because of the transparency.

* Update figures 1, 2, and 3 for SDx 2019.1 (#471)

* Update gui_fig_2.png and gui_fig_3.png to SDx 2019.1
SDx's welcome screen has stratified the option (read: clickable button)
to `Create SDx Project` into two new ones: `Create Platform Project`
and `Create Library Project`.  These changes are rendered in Figure 2,
while Figure 3 captures cosmetic differences to the user interface.

* Add Figure 2

* Add Figure 3

Author: deeppat

SDAccel/README.md

@@ -89,7 +89,7 @@ For CPU-based (SW) emulation, both the host code and the FPGA binary code are co
 The instructions below describe how to run the SDAccel SW Emulation flow using the Makefile provided with a simple "hello world" example
 
 ```
-    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/host/helloworld_ocl/          
+    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/hello_world/helloworld_ocl/          
     $ make clean                                                                 
     $ make check TARGETS=sw_emu DEVICES=$AWS_PLATFORM all     
 ```
@@ -104,7 +104,7 @@ The SDAccel hardware emulation flow enables the developer to check the correctne
 The instructions below describe how to run the HW Emulation flow using the Makefile provided with a simple "hello world" example: 
 
 ```
-    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/host/helloworld_ocl/             
+    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/hello_world/helloworld_ocl/             
     $ make clean                                                                   
     $ make check TARGETS=hw_emu DEVICES=$AWS_PLATFORM all      
 ```
@@ -118,7 +118,7 @@ The SDAccel system build flow enables the developer to build their host applicat
 The instructions below describe how to build the Xilinx FPGA Binary and host application using the Makefile provided with a simple "hello world" example: 
 
 ```
-    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/host/helloworld_ocl/           
+    $ cd $SDACCEL_DIR/examples/xilinx/getting_started/hello_world/helloworld_ocl/           
     $ make clean                                                             
     $ make TARGETS=hw DEVICES=$AWS_PLATFORM all   
 ```
@@ -198,7 +198,7 @@ For help with AFI creation issues, see [create-fpga-image error codes](../hdk/do
      * Depending on the host code, the \*.awsxclbin may need to named \<hostcodename>.hw.\<platformname>.awsxclbin .For Example:  ```vector_addition.hw.xilinx_aws-vu9p-f1-04261818_dynamic_5_0.awsxclbin```
      * Copy any data files required for execution to the new instance
      * [Clone the github repository to the new F1 instance and install runtime drivers](#gitsetenv)
-   * Clone the github repository to the new F1 instance and install runtime drivers
+     
 ```
    $ git clone https://github.com/aws/aws-fpga.git $AWS_FPGA_REPO_DIR
    $ cd $AWS_FPGA_REPO_DIR 

SDAccel/docs/README_GUI.md

@@ -29,7 +29,7 @@ The SDAccel examples from the github are downloaded by the above steps. However,
 
 First change directory to **helloworld_ocl** example. 
 ```
-    $ cd <git area>/SDAccel/examples/xilinx_2017.4/getting_started/host/helloworld_ocl
+    $ cd <git area>/SDAccel/examples/xilinx/getting_started/hello_world/helloworld_ocl
 ```
 The github examples use common header files and those needs to be copied in the local project source folder to make it easier to use. 
 Type the command **make local-files** to copy all necessary files in the local directory.
@@ -46,9 +46,9 @@ To debug using gdb inside from SDX gui few additional commands are needed to exe
 
 ```
    $ mv /usr/local/Modules/init init.bak
-   $ unset –f switchml
-   $ unset –f _moduleraw
-   $ unset –f module
+   $ unset -f switchml
+   $ unset -f _moduleraw
+   $ unset -f module
    $ sdx
 ```
 
@@ -62,7 +62,7 @@ We will now cover the following steps:
 Add workspace inside the current directory named "GUI_test" as shown below. A new directory **GUI_test** will be created and used to store all logfiles of our runs.  
 
 
-![](./figure/gui_fig_1.JPG)  
+![](./figure/gui_fig_1.png)  
 
 <br>
 
@@ -71,15 +71,15 @@ You will get a Welcome screen. You need to set Platform path by selecting **Add
 
 <br> 
 
-![](./figure/gui_fig_2.JPG)  
+![](./figure/gui_fig_2.png)  
 
 
 
 Click on the **plus** sign as shown below.   
 
 
 
-![](./figure/gui_fig_3.JPG)  
+![](./figure/gui_fig_3.png)