Removed syntastic and replaced it with ale

Read more here:
https://github.com/w0rp/ale

sources_non_forked/ale/doc/ale-fortran.txt

@@ -0,0 +1,36 @@
+===============================================================================
+ALE Fortran Integration                                   *ale-fortran-options*
+
+
+===============================================================================
+gcc                                                           *ale-fortran-gcc*
+
+g:ale_fortran_gcc_executable                     *g:ale_fortran_gcc_executable*
+                                                 *b:ale_fortran_gcc_executable*
+  Type: |String|
+  Default: `'gcc'`
+
+  This variable can be changed to modify the executable used for checking
+  Fortran code with GCC.
+
+
+g:ale_fortran_gcc_options                           *g:ale_fortran_gcc_options*
+                                                    *b:ale_fortran_gcc_options*
+  Type: |String|
+  Default: `'-Wall'`
+
+  This variable can be changed to modify flags given to gcc.
+
+
+g:ale_fortran_gcc_use_free_form               *g:ale_fortran_gcc_use_free_form*
+                                              *b:ale_fortran_gcc_use_free_form*
+  Type: |Number|
+  Default: `1`
+
+  When set to `1`, the `-ffree-form` flag will be used for GCC, to check files
+  with the free form layout. When set to `0`, `-ffixed-form` will be used
+  instead, for checking files with fixed form layouts.
+
+
+===============================================================================
+  vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl: