Various fixes to documentation---typos, some incomplete documentation fixed, \file tags corrected, copyright added to files that had it missing, etc.

I ensured that I didn't change any code with this commit, and even tested on the cluster to be doubly sure:

  http://church.cims.nyu.edu/regress-results/compare_jobs.php?job_id=4655&reference_id=4646&p=0

1 files changed, 2 insertions, 2 deletions

diff --git a/src/decision/justification_heuristic.h b/src/decision/justification_heuristic.h
index 1dc7a85d7..f0ae9fe78 100644
--- a/src/decision/justification_heuristic.h
+++ b/src/decision/justification_heuristic.h
@@ -37,7 +37,7 @@ namespace decision {
 class GiveUpException : public Exception {
 public:
   GiveUpException() : 
-    Exception("justification hueristic: giving up") {
+    Exception("justification heuristic: giving up") {
   }
 };/* class GiveUpException */
 
@@ -196,7 +196,7 @@ private:
   }
   
   /** 
-   * Do all the hardwork. 
+   * Do all the hard work. 
    * @param findFirst returns
    */ 
   bool findSplitterRec(TNode node, SatValue value, SatLiteral* litDecision);