Improve gcc-4 and -7 tests

These now check all ts18661 types, and the wrapper scripts avoid argument re-parsing

Author: smowton

regression/ansi-c/gcc_version1/fake-gcc-4

@@ -1,4 +1,4 @@
 #!/bin/sh
 
-gcc -Wno-macro-redefined -U __clang_major__ -D __GNUC__=4 -D __GNUC_MINOR__=9 -D __GNUC_PATCHLEVEL__=1 $*
+gcc -Wno-macro-redefined -U __clang_major__ -D __GNUC__=4 -D __GNUC_MINOR__=2 -D __GNUC_PATCHLEVEL__=1 "$@"
 

regression/ansi-c/gcc_version1/fake-gcc-7

@@ -1,4 +1,4 @@
 #!/bin/sh
 
-gcc -Wno-macro-redefined -U __clang_major__ -D __GNUC__=7 -D __GNUC_MINOR__=0 -D __GNUC_PATCHLEVEL__=0 $*
+gcc -Wno-macro-redefined -U __clang_major__ -D __GNUC__=7 -D __GNUC_MINOR__=0 -D __GNUC_PATCHLEVEL__=0 "$@"
 

regression/ansi-c/gcc_version1/gcc-4.c

@@ -1,2 +1,8 @@
-typedef double _Float64;
+// None of these types should be defined when emulating gcc-4:
 
+typedef float _Float32;
+typedef double _Float32x;
+typedef double _Float64;
+typedef long double _Float64x;
+typedef long double _Float128;
+typedef long double _Float128x;

regression/ansi-c/gcc_version1/gcc-7.c

@@ -1,2 +1,7 @@
-_Float64 some_var;
-
+// All these types should be provided when emulating gcc-7:
+_Float32 f32;
+_Float32x f32x;
+_Float64 f64;
+_Float64x f64x;
+_Float128 f128;
+_Float128x f128x;