Windows: Change installer filename

Commit 45dad4b introduced uniform naming scheme for released files. However
that was done only in Makefile.release, but windows IDE installer name is
defined in installer NSIS script, and that wasn't changed due to mistake.
This commit brings Windows installer file name to the same naming
convention:

   arc_gnu_YYYY.MM_{product}_{os}_install

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

windows-installer/installer.nsi

@@ -46,7 +46,7 @@
 ; Settings
 
 # File and Installer Name
-outfile "${entry_name}_ide_${arcver}_win_install.exe"
+outfile "${entry_name}_${arcver}_ide_win_install.exe"
 Name "${arctitle} ${arcver}"
 
 # Default directory