Add bang feature from antmd branch
Add extremely partial 'execute' and 'echo' feature

Conflicts:
	XVim.xcodeproj/project.pbxproj
	XVim/XVimExCommand.m

Conflicts:
	XVim.xcodeproj/project.pbxproj
h,l,b,e,w,cw,dw,dl,x understanding placeholders
Fix issue #553 wrong cursor position for quote text object
remove debug log noise
comment out unused methods
warning
add file,line info to XVimTestCase
Add jumplist feature

Conflicts:
	XVim.xcodeproj/project.pbxproj
	XVim/XVimMark.h
	XVim/XVimMark.m
	XVim/XVimMarks.m
Fix hide/show scrollbars for guioptions
Add features C-w o