add missing test from -fdollar-in-identifiers commit

Commit 5ce2154c ("-fdollar-in-identifiers addon", 20-04-2015) forgot
to include the test files from Daniel's patch.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>

tests/tests2/76_dollars_in_identifiers.c

@@ -0,0 +1,41 @@
+#include <stdio.h>
+
+#define $(x) x
+#define $fred 10
+#define joe$ 20
+#define hen$y 30
+
+#define $10(x) x*10
+#define _$10(x) x/10
+
+int main()
+{
+   printf("fred=%d\n", $fred);
+   printf("joe=%d\n", joe$);
+   printf("henry=%d\n", hen$y);
+
+   printf("fred2=%d\n", $($fred));
+   printf("joe2=%d\n", $(joe$));
+   printf("henry2=%d\n", $(hen$y));
+
+   printf("fred10=%d\n", $10($fred));
+   printf("joe_10=%d\n", _$10(joe$));
+
+   int $ = 10;
+   int a100$ = 100;
+   int a$$ = 1000;
+   int a$c$b = 2121;
+   int $100 = 10000;
+   const char *$$$ = "money";
+
+   printf("local=%d\n", $);
+   printf("a100$=%d\n", a100$);
+   printf("a$$=%d\n", a$$);
+   printf("a$c$b=%d\n", a$c$b);
+   printf("$100=%d\n", $100);
+   printf("$$$=%s", $$$);
+
+   return 0;
+}
+
+/* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/

tests/tests2/76_dollars_in_identifiers.expect

@@ -0,0 +1,14 @@
+fred=10
+joe=20
+henry=30
+fred2=10
+joe2=20
+henry2=30
+fred10=100
+joe_10=2
+local=10
+a100$=100
+a$$=1000
+a$c$b=2121
+$100=10000
+$$$=money