Some of the build files adapt to adding and removing source code files but most
must be modified by hand. Here is a list of directories and the build files that
must be modified or possibly need to be modified.
The Cocoa project.pbxproj file is complex and should be modified with Xcode.
The other build files can be edited manually.

src:
	cocoa/ScintillaFramework/ScintillaFramework.xcodeproj/project.pbxproj
	gtk/makefile
	qt/ScintillaEdit/ScintillaEdit.pro
	qt/ScintillaEditBase/ScintillaEditBase.pro
	win32/makefile
	win32/scintilla.mak
	-- possibly:
	test/unit/makefile
	test/unit/test.mak

cocoa:
	cocoa/ScintillaFramework/ScintillaFramework.xcodeproj/project.pbxproj

gtk:
	gtk/makefile

qt:
	qt/ScintillaEdit/ScintillaEdit.pro
	qt/ScintillaEditBase/ScintillaEditBase.pro

win32:
	win32/makefile
	win32/scintilla.mak