64-bit emulator

Patch to allow emulator searches for emulator64-${ARCH} first on
64-bit OS.  If none is found, the original behavior which searchs
for 32-bit emulator-${ARCH} is performed as usual.

64-bit emulator (which still emulates Android built in 32-bit) offers
up to 20% speedup compared to its 32-bit counterpart.

Details:

android/main-emulator.c
 1) search emulator64 based on the OS
 2) dlopen lib64OpenglRender in 64-bit

Makefile.*
 1) Rules to build 64-bit executable emulator64-{x86,arm} and libraries
    emulator64-{libui,libqemu,target-i386,target-arm,libelff,common}
 2) remove -Wa,-32
 3) Changes prebuit toolchain path

android-configure.h
android/build/common.h
 1) no longer force 32-bit build (because now prebuilts/tools/gcc-sdk/gcc
    can now handle 64-bit
 2) set ANDROID_PREBUILTS to correctly locate ccache

android/config/*/config-host.h
 1) Detect HOST_X86_64 and HOST_X86_64/HOST_I386

Misc 64-bit porting clean-up
 1) use %zx to print variable of type size_t in hex
 2) use %zu to print variable of type size_t in dec
 3) Initialize query_parm to NULL
 4) use PRIu64 to replace PDUd64
 5) use PRId64/PRIu64/PRIX64 to print 64-bit
 6) drop PRUx64 because PRIx64 does the same
 7) cast pointer arith to intptr_t before casting to int
 8) fixed 1ULL<<63

Change-Id: Ife62a20063a6ec38d4a9b23977e840af1fce149a

2 files changed, 4 insertions, 6 deletions

diff --git a/android/utils/system.c b/android/utils/system.c
index e65c602..6a6a4e1 100644
--- a/android/utils/system.c
+++ b/android/utils/system.c
@@ -67,7 +67,7 @@ android_realloc( void*  block, size_t  size )
     if (block2 != NULL)
         return block2;
 
-    fprintf(stderr, "PANIC: not enough memory to reallocate %lld bytes\n", (uint64_t)size);
+    fprintf(stderr, "PANIC: not enough memory to reallocate %zu bytes\n", size);
     exit(1);
     return NULL;
 }
diff --git a/android/utils/system.h b/android/utils/system.h
index 464957d..531c7eb 100644
--- a/android/utils/system.h
+++ b/android/utils/system.h
@@ -14,6 +14,7 @@
 
 #include <string.h>
 #include <stdint.h>
+#define __STDC_FORMAT_MACROS 1
 #include <inttypes.h>  /* for PRId64 et al. */
 #include "android/utils/assert.h"
 
@@ -173,11 +174,8 @@ extern  void   sleep_ms( int  timeout );
 #ifndef PRIx64
 #  define PRIx64  "llx"
 #endif
-#ifndef PRUd64
-#  define PRUd64  "llu"
-#endif
-#ifndef PRUx64
-#  define PRUx64  "llx"
+#ifndef PRIu64
+#  define PRIu64  "llu"
 #endif
 
 /* */