Harmonize names of external repositories

Recent Bazel versions support dash character in external repository
names.

Update the repository names to consistently use dash instead of
underscore.

Change-Id: I56e38f415d613e969432dfbce6b2dda05495a6c7
diff --git a/BUILD b/BUILD
index c11b095..116cd88 100644
--- a/BUILD
+++ b/BUILD
@@ -4,7 +4,7 @@
     name = "gitiles",
     srcs = [
         ":gitiles__base",
-        "@gitiles_servlet//jar",
+        "@gitiles-servlet//jar",
     ],
     outs = ["gitiles.jar"],
     cmd = " && ".join([
@@ -12,7 +12,7 @@
         "TMP=$$(mktemp -d || mktemp -d -t bazel-tmp)",
         "cp $(location :gitiles__base) $@",
         "chmod +w $@",
-        "unzip -qd $$TMP $(location @gitiles_servlet//jar) \"com/google/gitiles/static/*\"",
+        "unzip -qd $$TMP $(location @gitiles-servlet//jar) \"com/google/gitiles/static/*\"",
         "cd $$TMP/com/google/gitiles",
         "mv static +static",
         "zip -Drq $$ROOT/$@ -g . -i \"+static/*\"",
@@ -45,12 +45,12 @@
     visibility = ["//visibility:public"],
     exports = [
         "@autolink//jar",
-        "@cm_autolink//jar",
-        "@commons-lang3//jar",
+        "@cm-autolink//jar",
         "@commonmark//jar",
-        "@gfm_strikethrough//jar",
-        "@gfm_tables//jar",
-        "@gitiles_servlet//jar",
+        "@commons-lang3//jar",
+        "@gfm-strikethrough//jar",
+        "@gfm-tables//jar",
+        "@gitiles-servlet//jar",
         "@prettify//jar",
     ],
 )
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 79e18c4..42ceff7 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -4,7 +4,7 @@
 
 def external_plugin_deps():
   maven_jar(
-    name = 'gitiles_servlet',
+    name = 'gitiles-servlet',
     artifact = 'com.google.gitiles:gitiles-servlet:0.2-1',
     sha1 = '4b83471c65e110a08d99570fafcdaf5f59a0b9ce',
     repository = GERRIT,
@@ -31,7 +31,7 @@
   )
 
   maven_jar(
-    name = 'cm_autolink',
+    name = 'cm-autolink',
     artifact = 'com.atlassian.commonmark:commonmark-ext-autolink:' + COMMONMARK_VERSION,
     sha1 = '4d7e828a4651e2f590b4a059925991be58e62da6',
   )
@@ -43,13 +43,13 @@
   )
 
   maven_jar(
-    name = 'gfm_strikethrough',
+    name = 'gfm-strikethrough',
     artifact = 'com.atlassian.commonmark:commonmark-ext-gfm-strikethrough:' + COMMONMARK_VERSION,
     sha1 = '75a95aaec77810496de41239bcc773adfb13285f',
   )
 
   maven_jar(
-    name = 'gfm_tables',
+    name = 'gfm-tables',
     artifact = 'com.atlassian.commonmark:commonmark-ext-gfm-tables:' + COMMONMARK_VERSION,
     sha1 = 'ae1c701517e8116bc205b561b9b215a53df8abc7',
   )