Fix some trivial typos in comments

No code or logic changes.

Signed-off-by: Jeff Squyres <[email protected]>

Author: jsquyres

oac_init.m4

@@ -15,7 +15,7 @@ dnl OAC_PUSH_PREFIX: Set a new prefix for AC_DEFINE/AC_SUBST names
 dnl
 dnl 1 -> new prefix
 dnl
-dnl Override (prehaps temporarily) the prefix name specified to
+dnl Override (perhaps temporarily) the prefix name specified to
 dnl OAC_INIT.
 AC_DEFUN([OAC_PUSH_PREFIX],
 [m4_pushdef([_oac_program_prefix], [$1])])

oac_list.m4

@@ -24,7 +24,7 @@ dnl
 dnl $HEADER$
 
 
-dnl OAC_UNIQ: Uniqify the string-seperated words in the input variable
+dnl OAC_UNIQ: Uniqify the string-separated words in the input variable
 dnl
 dnl 1 -> variable name to be uniq-ized
 AC_DEFUN([OAC_UNIQ],[

oac_var_scope.m4

@@ -68,7 +68,7 @@ oac_var_scope_pop()
 
 dnl OAC_VAR_SCOPE_PUSH: Create a new variable scope
 dnl
-dnl 1 -> space seperated list of variable names to push into the new scope
+dnl 1 -> space separated list of variable names to push into the new scope
 dnl
 dnl Scope-check that the vars in the space-separated vars list are not already
 dnl in use.  Generate a configure-time error if a conflict is found.  Note that