[PATCH 0/1] Introduce new build variables INSTALL_MODE_EXECUTABLE and INSTALL_MODE_DATA.

During a build/install cycle of the current HEAD whilst attempting to identify the cause of a bug in git version 1.8.0.3 whilst doing:

GIT_CURL_VERBOSE=1 git clone -v https://git01.codeplex.com/typescript

* GnuTLS recv error (-9): A TLS packet with unexpected length was received.
* Closing connection #0
error: RPC failed; result=56, HTTP code = 200

I hit a local install failure whilst installing to the prefix /usr/local/ where the $(INSTALL) command reported a Permission Denied error.

This was due to the $(INSTALL) modes being 755/644 but the file-system modes being 775/664. In this case ownership and permissions are:

$ ls -ald /usr/local drwxrwxr-x 13 root adm 4096 Sep 26 04:16 /usr/local

Users belonging to the 'adm' group have permission to install local packages.

The fix I've implemented is to convert the hard-coded 755/644 modes to variables which can be over-ridden on the make command-line if necessary.