Merge branch 'release/v1.4.1'

Author: valeros

builder/main.py

@@ -28,7 +28,7 @@
     RANLIB="pic32-ranlib",
     SIZETOOL="pic32-size",
 
-    ARFLAGS=["rcs"],
+    ARFLAGS=["rc"],
 
     ASFLAGS=[
         "-g1",

platform.json

@@ -12,7 +12,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-microchippic32.git"
   },
-  "version": "1.4.0",
+  "version": "1.4.1",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
     "http://dl.platformio.org/packages/manifest.json"