build: fix path voodoo in icu-generic.gyp

Intention was to get to `PRODUCT_DIR` so no need to do path voodoo
Also added `'msvs_quote_cmd': 0` and more precise quoting

PR-URL: #11217
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Steven R Loomis <srloomis@us.ibm.com>

Author: refack

tools/icu/icu-generic.gyp

@@ -228,6 +228,7 @@
               'actions': [
                 {
                   'action_name': 'icudata',
+                  'msvs_quote_cmd': 0,
                   'inputs': [ '<(icu_data_in)' ],
                   'outputs': [ '<(SHARED_INTERMEDIATE_DIR)/icudt<(icu_ver_major)<(icu_endianness)_dat.obj' ],
                   'action': [ '<(PRODUCT_DIR)/genccode',
@@ -247,11 +248,12 @@
                 {
                   # trim down ICU
                   'action_name': 'icutrim',
+                  'msvs_quote_cmd': 0,
                   'inputs': [ '<(icu_data_in)', 'icu_small.json' ],
                   'outputs': [ '<(SHARED_INTERMEDIATE_DIR)/icutmp/icudt<(icu_ver_major)<(icu_endianness).dat' ],
                   'action': [ 'python',
                               'icutrim.py',
-                              '-P', '../../<(CONFIGURATION_NAME)',
+                              '-P', '<(PRODUCT_DIR)/.', # '.' suffix is a workaround against GYP assumptions :(
                               '-D', '<(icu_data_in)',
                               '--delete-tmp',
                               '-T', '<(SHARED_INTERMEDIATE_DIR)/icutmp',
@@ -263,9 +265,10 @@
                 {
                   # build final .dat -> .obj
                   'action_name': 'genccode',
+                  'msvs_quote_cmd': 0,
                   'inputs': [ '<(SHARED_INTERMEDIATE_DIR)/icutmp/icudt<(icu_ver_major)<(icu_endianness).dat' ],
                   'outputs': [ '<(SHARED_INTERMEDIATE_DIR)/icudt<(icu_ver_major)<(icu_endianness)_dat.obj' ],
-                  'action': [ '../../<(CONFIGURATION_NAME)/genccode',
+                  'action': [ '<(PRODUCT_DIR)/genccode',
                               '-o',
                               '-d', '<(SHARED_INTERMEDIATE_DIR)/',
                               '-n', 'icudata',