update for Firefox 26 / Mac
(also updated flags for XCode 5.0.2 on Mavericks)

Change-Id: Iaf6442ea2a116812a49aa6ac0d7452d307c77c47
diff --git a/config.mk b/config.mk
index 597cf0f..62d8458 100644
--- a/config.mk
+++ b/config.mk
@@ -89,7 +89,7 @@
 endif
 ifeq ($(shell uname),Darwin)
 OS=mac
-BASECFLAGS= $(DEBUGCFLAGS) -O2 -fPIC $(INC) -D__mac -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk -std=c++11
+BASECFLAGS= $(DEBUGCFLAGS) -O2 -fPIC $(INC) -D__mac -std=c++11 -mmacosx-version-min=10.5 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/
 ARCHCFLAGS=-arch $(MARCH)
 ALLARCHCFLAGS=-arch i386 -arch x86_64
 AR=libtool
diff --git a/xpcom/Makefile b/xpcom/Makefile
index a87f15a..3ef55d7 100644
--- a/xpcom/Makefile
+++ b/xpcom/Makefile
@@ -24,7 +24,7 @@
 DEFAULT_FIREFOX_LIBS ?= /Applications/Firefox.app/Contents/MacOS
 RUN_PATH_FLAG = -executable_path
 DLL_SUFFIX = .dylib
-DLLFLAGS += -bundle $(ALLARCHCFLAGS) -mmacosx-version-min=10.5  -isysroot /Developer/SDKs/MacOSX10.5.sdk
+DLLFLAGS += -bundle $(ALLARCHCFLAGS) -mmacosx-version-min=10.5 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/
 CFLAGS += $(ALLARCHCFLAGS)
 CXXFLAGS += $(ALLARCHCFLAGS)
 TARGET_PLATFORM = Darwin-gcc3
diff --git a/xpcom/prebuilt/extension/lib/Darwin-gcc3/ff260/libgwt_dev_ff260.dylib b/xpcom/prebuilt/extension/lib/Darwin-gcc3/ff260/libgwt_dev_ff260.dylib
new file mode 100755
index 0000000..8938fe7
--- /dev/null
+++ b/xpcom/prebuilt/extension/lib/Darwin-gcc3/ff260/libgwt_dev_ff260.dylib
Binary files differ