Bump version in Makefile.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2905 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/Makefile

 VERSION_MAJOR = 1
-VERSION_MINOR = 6
+VERSION_MINOR = 7
 VERSION_RELEASE = 0-SVN
 VERSION = $(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_RELEASE)
-# Irrlicht Engine 1.6.0-SVN
+# Irrlicht Engine 1.7.0-SVN
 # Makefile for Linux
 #
 # To use, just run: