[Misc] Added 'preview' to version string

Summary: added 'preview' to version string;
refined configure parameters to follow OpenJDK conventions
see http://openjdk.java.net/jeps/223

Test Plan: sanity test

Reviewed-by: sanhong.lsh, kuaiwei.kw

Issue: https://aone.alibaba-inc.com/task/23921848

make.sh

@@ -38,8 +38,9 @@ bash ./configure --with-freetype=system \
                  --with-vendor-name="Alibaba" \
                  --with-vendor-url="http://www.alibabagroup.com" \
                  --with-vendor-bug-url="mailto:dragonwell_use@googlegroups.com" \
-                 --with-version-pre="Dragonwell" \
-                 --with-version-opt="Alibaba" \
+                 --with-vendor-version-string="(Alibaba Dragonwell)" \
+                 --with-version-pre="preview" \
+                 --with-version-opt="" \
                  --with-version-build="${BUILD_NUMBER}" \
                  --with-version-feature="11" \
                  --with-version-patch="${DRAGONWELL_VERSION}" \

make/autoconf/jdk-version.m4

@@ -499,7 +499,8 @@ AC_DEFUN_ONCE([JDKVER_SETUP_JDK_VERSION_NUMBERS],
       [Set vendor version string @<:@not specified@:>@])])
   if test "x$with_vendor_version_string" = xyes; then
     AC_MSG_ERROR([--with-vendor-version-string must have a value])
-  elif [ ! [[ $with_vendor_version_string =~ ^[[:graph:]]*$ ]] ]; then
+  elif [ ! [[ $with_vendor_version_string =~ ^[[:print:]]*$ ]] ]; then
+    # Dragonwell supports white spaces in vendor-version-string
     AC_MSG_ERROR([--with--vendor-version-string contains non-graphical characters: $with_vendor_version_string])
   else
     VENDOR_VERSION_STRING="$with_vendor_version_string"