Issue #80 - reinstated unified building for some large chunks of our code.

This should reduce compile complexity saving time and reducing linker stress.

layout/build/moz.build

@@ -9,7 +9,7 @@ EXPORTS += [
     'nsLayoutStatics.h',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsContentDLF.cpp',
     'nsLayoutModule.cpp',
     'nsLayoutStatics.cpp',

layout/forms/moz.build

@@ -17,7 +17,7 @@ EXPORTS += [
     'nsITextControlFrame.h',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsButtonFrameRenderer.cpp',
     'nsColorControlFrame.cpp',
     'nsComboboxControlFrame.cpp',

layout/inspector/moz.build

@@ -25,7 +25,7 @@ EXPORTS += [
     'nsFontFaceList.h',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'inCSSValueSearch.cpp',
     'inDeepTreeWalker.cpp',
     'inDOMUtils.cpp',

layout/ipc/moz.build

@@ -13,9 +13,12 @@ EXPORTS.mozilla.layout += [
     'VsyncParent.h',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'RenderFrameChild.cpp',
     'RenderFrameParent.cpp',
+]
+
+SOURCES += [
     'VsyncChild.cpp',
     'VsyncParent.cpp',
 ]

layout/mathml/moz.build

@@ -15,7 +15,7 @@ if CONFIG['ENABLE_TESTS']:
         'tests/chrome.ini',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsMathMLChar.cpp',
     'nsMathMLContainerFrame.cpp',
     'nsMathMLFrame.cpp',

layout/tools/layout-debug/src/moz.build

@@ -14,7 +14,7 @@ EXPORTS += [
     'nsLayoutDebugCIID.h',
 ]
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsDebugFactory.cpp',
     'nsLayoutDebugCLH.cpp',
     'nsLayoutDebuggingTools.cpp',