Modified the sysinfo script to better detect various OSes.

build/sysinfo

@@ -38,25 +38,31 @@ if [ "${#keys[@]}" -eq 0 ]; then
 	exit 0
 fi
 
-release="$(uname -r)" || panic
-kernel="$(uname)" || panic
+release="$(uname -r)" || panic "cannot get release name"
+kernel="$(uname)" || panic "cannot get kernel name"
+kernel_lc="$(tr '[:upper:]' '[:lower:]' <<< "$kernel")" || \
+  panic "cannot convert to lowercase"
 
 if [ "$verbose" -ge 1 ]; then
-	eecho "uname $name"
-	eecho "uname -r $release"
+	eecho "system name: $name"
+	eecho "release name: $release"
 fi
 
 os=
 
-case "$release" in
-*[Mm]icrosoft*)
-	os=windows;;
-esac
+#case "$release" in
+#*[Mm]icrosoft*)
+#	os=windows;;
+#esac
 
 if [ -z "$os" ]; then
-	case "$kernel" in
-	*[Ll]inux*)
+	case "$kernel_lc" in
+	linux*)
 		os=linux;;
+	ming*)
+		os=windows;;
+	darwin*)
+		os=macos;;
 	esac
 fi