diff --git a/build/build.xml b/build/build.xml
index c5b8803a0..8919df798 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -91,7 +91,7 @@
-
+
@@ -1068,10 +1068,10 @@
-
-
+
+
-
+
diff --git a/build/linux/avr-gcc-4.9.2-arduino2-armhf-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino2-armhf-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index 542954054..000000000
--- a/build/linux/avr-gcc-4.9.2-arduino2-armhf-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-117364326d47da17a3cbc4cb49ac149f71dde508
diff --git a/build/linux/avr-gcc-4.9.2-arduino2-i686-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino2-i686-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index cde4ec21a..000000000
--- a/build/linux/avr-gcc-4.9.2-arduino2-i686-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-e247b77eef43423e19680b60fa65bdf22b20f4f5
diff --git a/build/linux/avr-gcc-4.9.2-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
deleted file mode 100644
index d96a4cae0..000000000
--- a/build/linux/avr-gcc-4.9.2-arduino2-x86_64-pc-linux-gnu.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-ebe696926990906e573a04b5fa1b71dba7ef5925
diff --git a/build/linux/avr-gcc-4.9.2-arduino4-armhf-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino4-armhf-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..75a89a6bd
--- /dev/null
+++ b/build/linux/avr-gcc-4.9.2-arduino4-armhf-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+3f8207df94b899ab1bc07e93d0e226113554466b
diff --git a/build/linux/avr-gcc-4.9.2-arduino4-i686-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino4-i686-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..d8c24e8d4
--- /dev/null
+++ b/build/linux/avr-gcc-4.9.2-arduino4-i686-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+4b787466bd6ebf6ed9d54f58b984de51dd05f014
diff --git a/build/linux/avr-gcc-4.9.2-arduino4-x86_64-pc-linux-gnu.tar.bz2.sha b/build/linux/avr-gcc-4.9.2-arduino4-x86_64-pc-linux-gnu.tar.bz2.sha
new file mode 100644
index 000000000..01094f168
--- /dev/null
+++ b/build/linux/avr-gcc-4.9.2-arduino4-x86_64-pc-linux-gnu.tar.bz2.sha
@@ -0,0 +1 @@
+cdf1df744b67f475ea625906690b3a32614c8534
diff --git a/build/macosx/avr-gcc-4.9.2-arduino2-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avr-gcc-4.9.2-arduino2-i386-apple-darwin11.tar.bz2.sha
deleted file mode 100644
index f47aedb7b..000000000
--- a/build/macosx/avr-gcc-4.9.2-arduino2-i386-apple-darwin11.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-73cd96b9183ae51f1b727eb15130b22a52228b18
diff --git a/build/macosx/avr-gcc-4.9.2-arduino4-i386-apple-darwin11.tar.bz2.sha b/build/macosx/avr-gcc-4.9.2-arduino4-i386-apple-darwin11.tar.bz2.sha
new file mode 100644
index 000000000..6573e58ff
--- /dev/null
+++ b/build/macosx/avr-gcc-4.9.2-arduino4-i386-apple-darwin11.tar.bz2.sha
@@ -0,0 +1 @@
+b065f135e6acaf88fba4591151dd3586f55583df
diff --git a/build/windows/avr-gcc-4.9.2-arduino2-i686-mingw32.tar.bz2.sha b/build/windows/avr-gcc-4.9.2-arduino2-i686-mingw32.tar.bz2.sha
deleted file mode 100644
index f82d2d9c3..000000000
--- a/build/windows/avr-gcc-4.9.2-arduino2-i686-mingw32.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-60c91c757a8dd4f1523120a2b3a1a4b7630f80f5
diff --git a/build/windows/avr-gcc-4.9.2-arduino4-i686-mingw32.zip.sha b/build/windows/avr-gcc-4.9.2-arduino4-i686-mingw32.zip.sha
new file mode 100644
index 000000000..08ae233f2
--- /dev/null
+++ b/build/windows/avr-gcc-4.9.2-arduino4-i686-mingw32.zip.sha
@@ -0,0 +1 @@
+78db4cafa5c950ec2c14f98ff14927ad8bfc7397
diff --git a/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.tar.bz2.sha b/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.tar.bz2.sha
deleted file mode 100644
index 2fa330629..000000000
--- a/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-3aa66a7f485bc4eae5eb8f8ce1140950607e8490
diff --git a/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.zip.sha b/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.zip.sha
new file mode 100644
index 000000000..9b9d3b373
--- /dev/null
+++ b/build/windows/avrdude-6.3.0-arduino2-i686-w64-mingw32.zip.sha
@@ -0,0 +1 @@
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