refactor: upgrade from 1.44 to 1.6

Use the latest lazarus 1.6 version

Author: GerryFerdinandus

.travis.yml

@@ -13,12 +13,12 @@ env:
     - WINEPREFIX=~/.winelaz
     - DISPLAY=:99.0
   matrix:	#For linux and mac osx build
-    - LAZ_VER=1.4.4
+    - LAZ_VER=1.6
 
 matrix:		#For windows build with linux wine. Use the same lazarus version as linux/mac build.
   include:
     - os: linux
-      env: LAZ_VER=1.4.4  LAZ_ENV=wine WINEARCH=win32 LAZ_OPT="--os=win32 --cpu=i386"
+      env: LAZ_VER=1.6  LAZ_ENV=wine WINEARCH=win32 LAZ_OPT="--os=win32 --cpu=i386"
 
 before_install:
     # Start virtual display server