gcc: Rename `tests/lib.h' to `tests/mocks.h'.

* gcc-plugin/tests/lib.h: Rename to...
* gcc-plugin/tests/mocks.h: ... this.

* gcc-plugin/tests/Makefile.am (dist_noinst_HEADERS): Update.

* gcc-plugin/tests/acquire.c, gcc-plugin/tests/base.c,
  gcc-plugin/tests/pointers.c, gcc-plugin/tests/register.c,
  gcc-plugin/tests/unregister.c: Update.

* gcc-plugin/tests/register-errors.c: Don't include <lib.h>.

gcc-plugin/tests/Makefile.am

@@ -29,7 +29,7 @@ gcc_tests =					\
   no-initialize.c				\
   shutdown-errors.c
 
-dist_noinst_HEADERS = lib.h
+dist_noinst_HEADERS = mocks.h
 
 CLEANFILES = *.gimple				\
   base						\

gcc-plugin/tests/acquire.c

@@ -18,7 +18,7 @@
 
 #undef NDEBUG
 
-#include <lib.h>
+#include <mocks.h>
 
 int
 main (int argc, char *argv[])

gcc-plugin/tests/base.c

@@ -16,7 +16,7 @@
 
 #undef NDEBUG
 
-#include <lib.h>
+#include <mocks.h>
 
 
 /* The task under test.  */

gcc-plugin/tests/pointers.c

@@ -16,7 +16,7 @@
 
 #undef NDEBUG
 
-#include <lib.h>
+#include <mocks.h>
 
 
 /* The tasks under test.  */

gcc-plugin/tests/register-errors.c

@@ -18,8 +18,6 @@
 
 #undef NDEBUG
 
-#include <lib.h>
-
 int
 main (int argc, char *argv[])
 {

gcc-plugin/tests/register.c

@@ -18,7 +18,7 @@
 
 #undef NDEBUG
 
-#include <lib.h>
+#include <mocks.h>
 
 static void
 foo (void)

gcc-plugin/tests/unregister.c

@@ -18,7 +18,7 @@
 
 #undef NDEBUG
 
-#include <lib.h>
+#include <mocks.h>
 
 int
 main (int argc, char *argv[])