Changed default installation path to /opt

InstallCrossCompiler.sh

@@ -3,6 +3,7 @@
 # Version: 0.2.0 - Alpha
 #
 # Changelog:
+#  0.2.4 - 21.03.19: Default installation path changed to /opt
 #  0.2.3 - 21.03.19: Missing dependency download script call added to 2nd stage GCC build
 #  0.2.2 - 21.03.19: --with-newlib added to Cortex-A9 2nd stage GCC compilation flags
 #  0.2.1 - 21.03.19: Exit if user is root
@@ -16,8 +17,8 @@
 # This directory is used to download the source code and build the Compiler.
 # After installation, this directory can be removed.
 TMPDIR="$HOME/.bstemp"
-MBXCINSTALLPATH="$TMPDIR/mbxc"
-A9XCINSTALLPATH="$TMPDIR/armxc"
+MBXCINSTALLPATH="/opt/mbxc"
+A9XCINSTALLPATH="/opt/armxc"
 
 #GCC_VERSION="6.3.0"
 GCC_VERSION="8.2.0"