misc. fixes

- tccgen: error out for cast to void, as in
      void foo(void) { return 1; }
  This avoids an assertion failure in x86_64-gen.c, also.
  also fix tests2/03_struct.c accordingly

- Error: "memory full" - be more specific

- Makefiles: remove circular dependencies, lookup tcctest.c from VPATH

- tcc.h: cleanup lib, include, crt and libgcc search paths"
  avoid duplication or trailing slashes with no CONFIG_MULTIARCHDIR
  (as from 9382d6f1a0e2d0104a82ed805207d9e742c6b068)

- tcc.h: remove ";{B}" from PE search path
  in ce5e12c2f950052d8109b6b7a56d900547705c08 James Lyon wrote:
  "... I'm not sure this is the right way to fix this problem."
  And the answer is: No, please. (copying libtcc1.a for tests instead)

- win32/build_tcc.bat: do not move away a versioned file

2 files changed, 1 insertions, 4 deletions

diff --git a/tests/tests2/03_struct.c b/tests/tests2/03_struct.c
index df0d3e7..c5d48c5 100644
--- a/tests/tests2/03_struct.c
+++ b/tests/tests2/03_struct.c
@@ -6,7 +6,7 @@ struct fred
    int natasha;
 };
 
-void main() 
+int main()
 {
    struct fred bloggs;
 
diff --git a/tests/tests2/Makefile b/tests/tests2/Makefile
index 369ed47..51dc38d 100644
--- a/tests/tests2/Makefile
+++ b/tests/tests2/Makefile
@@ -96,6 +96,3 @@ all test: $(TESTS)
 
 clean:
 	rm -vf fred.txt *.output
-
-Makefile: $(top_srcdir)/tests/tests2/Makefile
-	cp $< $@