Add -Wno-parentheses-equality to dev-warnings.

Also fix a block comment formatting glitch.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2327)

Configure

@@ -103,18 +103,19 @@ my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lx
 # past these.
 
 # DEBUG_UNUSED enables __owur (warn unused result) checks.
+# -DPEDANTIC complements -pedantic and is meant to mask code that
+# is not strictly standard-compliant and/or implementation-specific,
+# e.g. inline assembly, disregards to alignment requirements, such
+# that -pedantic would complain about. Incidentally -DPEDANTIC has
+# to be used even in sanitized builds, because sanitizer too is
+# supposed to and does take notice of non-standard behaviour. Then
+# -pedantic with pre-C9x compiler would also complain about 'long
+# long' not being supported. As 64-bit algorithms are common now,
+# it grew impossible to resolve this without sizeable additional
+# code, so we just tell compiler to be pedantic about everything
+# but 'long long' type.
+
 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
-        # -DPEDANTIC complements -pedantic and is meant to mask code that
-        # is not strictly standard-compliant and/or implementation-specific,
-        # e.g. inline assembly, disregards to alignment requirements, such
-        # that -pedantic would complain about. Incidentally -DPEDANTIC has
-        # to be used even in sanitized builds, because sanitizer too is
-        # supposed to and does take notice of non-standard behaviour. Then
-        # -pedantic with pre-C9x compiler would also complain about 'long
-        # long' not being supported. As 64-bit algorithms are common now,
-        # it grew impossible to resolve this without sizeable additional
-        # code, so we just tell compiler to be pedantic about everything
-        # but 'long long' type.
         . " -Wswitch"
         . " -DPEDANTIC -pedantic -Wno-long-long"
         . " -Wall"
@@ -123,6 +124,7 @@ my $gcc_devteam_warn = "-DDEBUG_UNUSED"
         . " -Wshadow"
         . " -Wformat"
         . " -Wtype-limits"
+        . " -Wno-parentheses-equality"
         . " -Werror"
         ;
 
@@ -130,7 +132,7 @@ my $gcc_devteam_warn = "-DDEBUG_UNUSED"
 # TODO(openssl-team): fix problems and investigate if (at least) the
 # following warnings can also be enabled:
 #       -Wcast-align
-#       -Wunreachable-code
+#       -Wunreachable-code -- no, too ugly/compiler-specific
 #       -Wlanguage-extension-token -- no, we use asm()
 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
@@ -139,6 +141,7 @@ my $clang_devteam_warn = ""
         . " -Wextra"
         . " -Wswitch -Wswitch-default"
         . " -Wno-unused-parameter"
+        . " -Wno-parentheses-equality"
         . " -Wno-missing-field-initializers"
         . " -Wno-language-extension-token"
         . " -Wno-extended-offsetof"