THRIFT-2849: spelling errors fixed using codespell tool

Client: All
Patch: Anatol Pomozov

This closes #281
diff --git a/contrib/fb303/TClientInfo.h b/contrib/fb303/TClientInfo.h
index d0a9770..6668c19 100644
--- a/contrib/fb303/TClientInfo.h
+++ b/contrib/fb303/TClientInfo.h
@@ -192,7 +192,7 @@
 
   /**
    * Return as string the thrift call either currently being processed or
-   * most recently processed if the connection is still open for additonal
+   * most recently processed if the connection is still open for additional
    * calls.  Returns NULL if a call hasn't been made yet or processing
    * has ended.
    */
diff --git a/contrib/fb303/aclocal/ax_javac_and_java.m4 b/contrib/fb303/aclocal/ax_javac_and_java.m4
index fdb4bf0..581b450 100644
--- a/contrib/fb303/aclocal/ax_javac_and_java.m4
+++ b/contrib/fb303/aclocal/ax_javac_and_java.m4
@@ -7,7 +7,7 @@
 dnl java command tested.  Otherwise, a hard-coded list will be used.
 dnl Similarly for "JAVAC".
 dnl
-dnl AX_JAVAC_AND_JAVA does not currenly support testing for a particular
+dnl AX_JAVAC_AND_JAVA does not currently support testing for a particular
 dnl Java version, testing for only one of "java" and "javac", or
 dnl compiling or running user-provided Java code.
 dnl