doc/Makefile: do not create files in case of errors
When stdout is redirected to the target file directly, the file is
created as an empty file even when an error occurs. Since the file is
there, 'make' wont try to re-create it in subsequent runs.
This fix is similar to the one in a6747ba27d22, but it also takes care
of rst2html and gendoc.py.
# Some default global settings for common merge tools
[merge-tools]
kdiff3.args=--auto --L1 base --L2 local --L3 other $base $local $other -o $output
kdiff3.regkey=Software\KDiff3
kdiff3.regappend=\kdiff3.exe
kdiff3.fixeol=True
kdiff3.gui=True
gvimdiff.args=--nofork -d -g -O $local $other $base
gvimdiff.regkey=Software\Vim\GVim
gvimdiff.regname=path
gvimdiff.priority=-9
merge.checkconflicts=True
merge.priority=-10
gpyfm.gui=True
meld.gui=True
tkdiff.args=$local $other -a $base -o $output
tkdiff.gui=True
tkdiff.priority=-8
xxdiff.args=--show-merged-pane --exit-with-merge-status --title1 local --title2 base --title3 other --merged-filename $output --merge $local $base $other
xxdiff.gui=True
xxdiff.priority=-8
diffmerge.args=--nosplash --merge --title1=base --title2=local --title3=other $base $local $other
diffmerge.checkchanged=True
diffmerge.gui=True
p4merge.args=$base $local $other $output
p4merge.regkey=Software\Perforce\Environment
p4merge.regname=P4INSTROOT
p4merge.regappend=\p4merge.exe
p4merge.gui=True
p4merge.priority=-8
tortoisemerge.args=/base:$base /mine:$local /theirs:$other /merged:$output
tortoisemerge.regkey=Software\TortoiseSVN
tortoisemerge.checkchanged=True
tortoisemerge.gui=True
ecmerge.args=$base $local $other --mode=merge3 --title0=base --title1=local --title2=other --to=$output
ecmerge.regkey=Software\Elli\xc3\xa9 Computing\Merge
ecmerge.gui=True
filemerge.executable=/Developer/Applications/Utilities/FileMerge.app/Contents/MacOS/FileMerge
filemerge.args=-left $other -right $local -ancestor $base -merge $output
filemerge.gui=True
beyondcompare3.args=$local $other $base $output /ro /lefttitle=local /centertitle=base /righttitle=other /automerge /reviewconflicts /solo
beyondcompare3.regkey=Software\Scooter Software\Beyond Compare 3
beyondcompare3.regname=ExePath
beyondcompare3.gui=True
winmerge.args=/e /u /dl local /dr other /wr $local $other $output
winmerge.regkey=Software\Thingamahoochie\WinMerge
winmerge.regname=Executable
winmerge.checkchanged=True
winmerge.gui=True