Fix many typos in docs and comments

This commit corrects many typos found in scaladocs, comments and
documentation. It should reduce a bit number of PRs which fix one
typo.

There are no changes in the 'real' code except one corrected name of
a JUnit test method and some error messages in exceptions. In the case
of typos in other method or field names etc., I just skipped them.

Obviously this commit doesn't fix all existing typos. I just generated
in IntelliJ the list of potential typos and looked through it quickly.

2 files changed, 3 insertions, 3 deletions

diff --git a/src/compiler/scala/tools/nsc/symtab/SymbolLoaders.scala b/src/compiler/scala/tools/nsc/symtab/SymbolLoaders.scala
index 9af3efbece..8fd2ea45e4 100644
--- a/src/compiler/scala/tools/nsc/symtab/SymbolLoaders.scala
+++ b/src/compiler/scala/tools/nsc/symtab/SymbolLoaders.scala
@@ -170,7 +170,7 @@ abstract class SymbolLoaders {
   }
 
   /** Create a new loader from a binary classfile.
-   *  This is intented as a hook allowing to support loading symbols from
+   *  This is intended as a hook allowing to support loading symbols from
    *  files other than .class files.
    */
   protected def newClassLoader(bin: AbstractFile): SymbolLoader =
diff --git a/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala b/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
index 1abbdb50b0..4d08be3c24 100644
--- a/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
+++ b/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
@@ -587,7 +587,7 @@ abstract class ClassfileParser {
 
               info = MethodType(newParams, clazz.tpe)
           }
-        // Note: the info may be overrwritten later with a generic signature
+        // Note: the info may be overwritten later with a generic signature
         // parsed from SignatureATTR
         sym setInfo info
         propagatePackageBoundary(jflags, sym)
@@ -768,7 +768,7 @@ abstract class ClassfileParser {
         classTParams = tparams
         val parents = new ListBuffer[Type]()
         while (index < end) {
-          parents += sig2type(tparams, skiptvs = false)  // here the variance doesnt'matter
+          parents += sig2type(tparams, skiptvs = false)  // here the variance doesn't matter
         }
         ClassInfoType(parents.toList, instanceScope, sym)
       }