[build] Add temp_bitcoin_locale_qrc to CLEAN_QT to fix make distcheck #11621

Fixes #11302

Tested on OS X 10.12.6 with 0e707919f596c80056bca295abd71543ccae4956

Was failing like:

make distclean
....
rm -f config.status config.cache config.log configure.lineno config.status.lineno
rm -f Makefile
ERROR: files left in build directory after distclean:
./src/qt/temp_bitcoin_locale.qrc
make[1]: *** [distcleancheck] Error 1
make: *** [distcheck] Error 1

utACK c52c0cd.

@fanquake This should be removed as soon as it's created: https://github.com/fanquake/bitcoin/blob/c52c0cdc8964d506e083d7cbc4fe6514f7398175/src/Makefile.qt.include#L430

Any idea what's keeping it around for you?

I don't think it hurts to add it to CLEANFILES just in case, but yes that is weird.

Sure, adding it as a backup is fine. It'd just be helpful to know why it's sticking around, as I'm not sure how that could happen. @fanquake Mind changing this to CLEAN_QT in Makefile.qt.include instead? utACK after that.

@theuni Rebased and updated to use CLEAN_QT

Still not sure what is making it hang around. Maybe permissions related?

  GEN      qt/qrc_bitcoin_locale.cpp
override r--r--r--  xxx/staff for qt/temp_bitcoin_locale.qrc? 
``

@fanquake ah yes, that must be it. distcheck makes all files read-only, I guess the parent dir ends up with a umask set.

There's a cleaner way to handle this using the .INTERMEDIATE target, but it's not really worth the effort here.

utACK a7c949f644d82a5b97617256fa5e8cc511b8aa5f