Don't let ld strip relocations

This is the first step for enabling ASLR (Address Space Layout
Randomization) support. The problem is ld.exe seems to be stripping
relocations which in turn will break ASLR support. We just make sure its
not stripping the main executable entry.

Signed-off-by: İsmail Dönmez <ismail@i10z.com>

Author: ismail

config.mak.uname

@@ -544,9 +544,11 @@ else
 		prefix = /usr/
 		ifeq (MINGW32,$(MSYSTEM))
 			prefix = /mingw32
+			BASIC_LDFLAGS += -Wl,--pic-executable,-e,_mainCRTStartup
 		endif
 		ifeq (MINGW64,$(MSYSTEM))
 			prefix = /mingw64
+			BASIC_LDFLAGS += -Wl,--pic-executable,-e,mainCRTStartup
 		else
 			COMPAT_CFLAGS += -D_USE_32BIT_TIME_T
 			BASIC_LDFLAGS += -Wl,--large-address-aware