fix issue with redirections to bash input file descriptor; new minimal chmod builtin; posix mode change for kill builtin return status; perform additional validation on brace expansion sequence expressions

doc/bash.1

@@ -1381,7 +1381,7 @@ below).
 .PP
 A
 .I variable
-may be assigned to by a statement of the form
+is assigned to using a statement of the form
 .RS
 .PP
 \fIname\fP=[\fIvalue\fP]
@@ -11348,7 +11348,7 @@ command that fails is part of the command list immediately following a
 .B while
 or
 .B until
-keyword,
+reserved word,
 part of the test following the
 .B if
 or
@@ -12547,7 +12547,7 @@ command is part of the command list immediately following a
 .B while
 or
 .B until
-keyword,
+reserved word,
 part of the test in an
 .I if
 statement, part of a command executed in a