Stop building OS-specific modules on all systems

They were only built on all systems for the benefit of the site plugin,
but I'm not intending to use that any more.

gl-dri-natives/pom.xml

@@ -21,15 +21,6 @@
     <openrs2.root>${project.parent.basedir}</openrs2.root>
   </properties>
 
-  <profiles>
-    <profile>
-      <id>unix</id>
-      <activation>
-        <os>
-          <family>unix</family>
-          <name>!mac os x</name>
-        </os>
-      </activation>
   <build>
     <plugins>
       <plugin>
@@ -48,6 +39,4 @@
       </plugin>
     </plugins>
   </build>
-    </profile>
-  </profiles>
 </project>

gl-dri-natives/src/main/c/jaggl_dri.c

@@ -1,14 +1,11 @@
 #include "jaggl_X11_dri.h"
 
-#if defined(__unix__)
 #include <dlfcn.h>
 #include <stddef.h>
 
 static void *jaggl_dri_handle;
-#endif
 
 JNIEXPORT jboolean JNICALL Java_jaggl_X11_dri_open(JNIEnv *env, jclass cls, jstring path) {
-#if defined(__unix__)
 	if (jaggl_dri_handle) {
 		dlclose(jaggl_dri_handle);
 		jaggl_dri_handle = NULL;
@@ -19,19 +16,14 @@ JNIEXPORT jboolean JNICALL Java_jaggl_X11_dri_open(JNIEnv *env, jclass cls, jstr
 	(*env)->ReleaseStringUTFChars(env, path, path_str);
 
 	return jaggl_dri_handle != NULL;
-#else
-	return JNI_FALSE;
-#endif
 }
 
 JNIEXPORT jboolean JNICALL Java_jaggl_X11_dri_close(JNIEnv *env, jclass cls) {
-#if defined(__unix__)
 	if (jaggl_dri_handle) {
 		dlclose(jaggl_dri_handle);
 		jaggl_dri_handle = NULL;
 		return JNI_TRUE;
 	}
-#endif
 
 	return JNI_FALSE;
 }

pom.xml

@@ -309,20 +309,6 @@
         <module>nonfree</module>
       </modules>
     </profile>
-    <profile>
-      <id>natives</id>
-      <activation>
-        <!-- <activeByDefault> would be nicer, but it deactivates itself if any other profile is active -->
-        <file>
-          <exists>.</exists>
-        </file>
-      </activation>
-      <modules>
-        <module>gl-natives</module>
-        <module>gl-dri-natives</module>
-        <module>misc-natives</module>
-      </modules>
-    </profile>
     <profile>
       <id>mac</id>
       <activation>
@@ -330,6 +316,9 @@
           <family>mac</family>
         </os>
       </activation>
+      <modules>
+        <module>gl-natives</module>
+      </modules>
       <build>
         <plugins>
           <plugin>
@@ -360,6 +349,10 @@
           <name>!mac os x</name>
         </os>
       </activation>
+      <modules>
+        <module>gl-natives</module>
+        <module>gl-dri-natives</module>
+      </modules>
       <build>
         <plugins>
           <plugin>
@@ -391,6 +384,10 @@
           <family>windows</family>
         </os>
       </activation>
+      <modules>
+        <module>gl-natives</module>
+        <module>misc-natives</module>
+      </modules>
       <build>
         <plugins>
           <plugin>