ALLJOYN-2225: Pretty-print build output (V=1 shows details).

The default is V=0 which provides less detailed, cleaner build output.

Change-Id: Ia209f77fbdc4d40d8c2ae4900420a978fac298e7
ALLJOYN-1491: Build dynamic C++ AllJoyn libraries for Linux and OpenWrt.

Static libraries are still built as well.  Other platforms only build static
libraries.

Change-Id: Ib25ddbaec7e1fb863c06ff1a09616bcd47395793