gbuild, python3: stop defining SOLARIS, and remove SOLARIS patch

It's faster to change our code not to rely on -DSOLARIS than to
wait for python developers to remove such nonsense from their public
headers.

Change-Id: I3ab05d41bbb51b91a2add599339ce334b5099330

external/python3/UnpackedTarball_python3.mk

@@ -21,7 +21,6 @@ $(eval $(call gb_UnpackedTarball_add_patches,python3,\
 	external/python3/python-3.3.0-darwin.patch.1 \
 	external/python3/python-3.3.0-ssl.patch.1 \
 	external/python3/python-3.3.0-msvc-disable.patch.1 \
-	external/python3/python-3.3.0-i42553.patch.2 \
 	external/python3/python-3.3.0-pythreadstate.patch.1 \
 	external/python3/python-3.3.0-clang.patch.1 \
 	external/python3/python-3.3.5-pyexpat-symbols.patch.1 \

external/python3/python-3.3.0-i42553.patch.2

-definition of gethostbyname conflicts with system /usr/include/unistd.h,
-available since at least Solaris 2.6 according to python-Bugs-837046
-Author: taniguchi@openoffice.org
-
---- misc/Python-2.6.1/Include/pyport.h	2008-06-11 09:41:16.000000000 +0200
-+++ misc/build/Python-2.6.1/Include/pyport.h	2011-06-06 17:31:17.000000000 +0200
-@@ -449,11 +449,6 @@
- in platform-specific #ifdefs.
- **************************************************************************/
- 
--#ifdef SOLARIS
--/* Unchecked */
--extern int gethostname(char *, int);
--#endif
--
- #ifdef HAVE__GETPTY
- #include <sys/types.h>          /* we need to import mode_t */
- extern char * _getpty(int *, int, mode_t, int);

solenv/gbuild/platform/solaris.mk

@@ -25,8 +25,10 @@ ifneq ($(origin AR),default)
 gb_AR := $(AR)
 endif
 
+# do not define SOLARIS - use #ifdef __sun instead
+#	-D$(OS) \
+
 gb_OSDEFS := \
-	-D$(OS) \
 	-DSYSV \
 	-DSUN \
 	-DSUN4 \