Updated with ICU51.1 versions.

Change-Id: I575b1fd4086d19d170f321a60c3e06f8700bba77
diff --git a/linux-x86_64/icu-50/gencnval b/linux-x86_64/icu-50/gencnval
deleted file mode 100755
index f029a11..0000000
--- a/linux-x86_64/icu-50/gencnval
+++ /dev/null
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diff --git a/linux-x86_64/icu-50/genrb b/linux-x86_64/icu-50/genrb
deleted file mode 100755
index 2cf456e..0000000
--- a/linux-x86_64/icu-50/genrb
+++ /dev/null
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diff --git a/linux-x86_64/icu-50/icupkg b/linux-x86_64/icu-50/icupkg
deleted file mode 100755
index 43cb8bf..0000000
--- a/linux-x86_64/icu-50/icupkg
+++ /dev/null
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diff --git a/linux-x86_64/icu-50/makeconv b/linux-x86_64/icu-50/makeconv
deleted file mode 100755
index e7bfecc..0000000
--- a/linux-x86_64/icu-50/makeconv
+++ /dev/null
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diff --git a/linux-x86_64/icu-51/gencnval b/linux-x86_64/icu-51/gencnval
new file mode 100755
index 0000000..160e86e
--- /dev/null
+++ b/linux-x86_64/icu-51/gencnval
Binary files differ
diff --git a/linux-x86_64/icu-51/genrb b/linux-x86_64/icu-51/genrb
new file mode 100755
index 0000000..fc180f0
--- /dev/null
+++ b/linux-x86_64/icu-51/genrb
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diff --git a/linux-x86_64/icu-51/icupkg b/linux-x86_64/icu-51/icupkg
new file mode 100755
index 0000000..3a0a605
--- /dev/null
+++ b/linux-x86_64/icu-51/icupkg
Binary files differ
diff --git a/linux-x86_64/icu-51/makeconv b/linux-x86_64/icu-51/makeconv
new file mode 100755
index 0000000..0e59920
--- /dev/null
+++ b/linux-x86_64/icu-51/makeconv
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diff --git a/linux-x86_64/icu-50/readme.txt b/linux-x86_64/icu-51/readme.txt
similarity index 87%
rename from linux-x86_64/icu-50/readme.txt
rename to linux-x86_64/icu-51/readme.txt
index 389c89d..053c3a3 100644
--- a/linux-x86_64/icu-50/readme.txt
+++ b/linux-x86_64/icu-51/readme.txt
@@ -3,9 +3,9 @@
 the Android build process. The tools can be
 re-created using the following steps:
 
-(1) Copy the whole "/extlibs/icu-50"
+(1) Copy the whole "/extlibs/icu-51"
     directory somewhere else. Please
-    do not use a vanilla ICU 50 for
+    do not use a vanilla ICU 51 for
     this, since the Android version
     includes some patches for tweaking
     file sizes.