build: set -blibpath: for AIX

nodejs#17604 refactored the gyp files
so that `-blibpath:` on AIX was only set if `node_shared=="true"`.
Restore the setting for non-shared builds.

Fixes: nodejs#25444

Author: richardlau

common.gypi

@@ -148,6 +148,17 @@
             'cflags': [ '-gxcoff' ],
             'ldflags': [ '-Wl,-bbigtoc' ],
             'conditions': [
+              ['target_arch=="ppc64"', {
+                'ldflags': [
+                  '-Wl,-blibpath:/usr/lib:/lib:'
+                    '/opt/freeware/lib/pthread/ppc64'
+                ],
+              }],
+              ['target_arch=="ppc"', {
+                'ldflags': [
+                  '-Wl,-blibpath:/usr/lib:/lib:/opt/freeware/lib/pthread'
+                ],
+              }],
               ['"<(real_os_name)"=="OS400"', {
                 'ldflags': [
                   '-Wl,-blibpath:/QOpenSys/pkgs/lib:/QOpenSys/usr/lib',
@@ -460,11 +471,18 @@
             'variables': {'real_os_name': '<!(uname -s)',},
             'conditions': [
               [ 'target_arch=="ppc"', {
-                'ldflags': [ '-Wl,-bmaxdata:0x60000000/dsa' ],
+                'ldflags': [
+                  '-Wl,-bmaxdata:0x60000000/dsa',
+                  '-Wl,-blibpath:/usr/lib:/lib:/opt/freeware/lib/pthread',
+                 ],
               }],
               [ 'target_arch=="ppc64"', {
                 'cflags': [ '-maix64' ],
-                'ldflags': [ '-maix64' ],
+                'ldflags': [
+                  '-maix64',
+                  '-Wl,-blibpath:/usr/lib:/lib:'
+                    '/opt/freeware/lib/pthread/ppc64',
+                ],
               }],
               ['"<(real_os_name)"=="OS400"', {
                 'ldflags': [