Restore Unicode path to viewer_manifest script - apparently we use the Unicode...

Restore Unicode path to viewer_manifest script - apparently we use the Unicode version of NSIS, not the one from the NULLSOFT site

indra/newview/viewer_manifest.py

@@ -595,7 +595,7 @@ def package_finish(self):
         # it also does python-style % substitution
         self.replace_in("installers/windows/installer_template.nsi", tempfile, {
                 "%%VERSION%%":version_vars,
-                "%%SOURCE%%":self.get_src_prefix(),
+                "%%SOURCE%%":self.get_src_sprefix(),
                 "%%INST_VARS%%":inst_vars_template % substitution_strings,
                 "%%INSTALL_FILES%%":self.nsi_file_commands(True),
                 "%%DELETE_FILES%%":self.nsi_file_commands(False)})
@@ -604,9 +604,9 @@ def package_finish(self):
         # http://www.scratchpaper.com/
         # Check two paths, one for Program Files, and one for Program Files (x86).
         # Yay 64bit windows.
-        NSIS_path = os.path.expandvars('${ProgramFiles}\\NSIS\\makensis.exe')
+        NSIS_path = os.path.expandvars('${ProgramFiles}\\NSIS\\Unicode\\makensis.exe')
         if not os.path.exists(NSIS_path):
-            NSIS_path = os.path.expandvars('${ProgramFiles(x86)}\\NSIS\\makensis.exe')
+            NSIS_path = os.path.expandvars('${ProgramFiles(x86)}\\NSIS\\Unicode\\makensis.exe')
         installer_created=False
         nsis_attempts=3
         nsis_retry_wait=15