docs: update debian and opensuse pkgs to reflect 64-bit as default

docs/index.html

@@ -686,10 +686,12 @@ USE_OSGPLUGIN(<plugin2>)
     bzip2 \
     flex \
     g++ \
+    g++-multilib \
     gettext\
     git \
     gperf \
     intltool \
+    libc6-dev-i386 \
     libgdk-pixbuf2.0-dev \
     libltdl-dev \
     libssl-dev \
@@ -710,11 +712,14 @@ USE_OSGPLUGIN(<plugin2>)
     xz-utils</pre>
 
     <p>
-    On 64-bit Debian, install also:
+    On 32-bit installs,
+    <pre>
+    g++-multilib
+    libc6-dev-i386
+    </pre>
+    are not required, however there are potential issues with
+    <a href="#issue-32-bit-systems">32-bit systems</a>.
     </p>
-    <pre>apt-get install \
-    g++-multilib \
-    libc6-dev-i386</pre>
 
     <p>
     Only the <a href="https://www.debian.org/releases/stable/">latest Debian stable series</a> is supported.
@@ -1006,13 +1011,18 @@ USE_OSGPLUGIN(&lt;plugin2&gt;)
     bison \
     bzip2 \
     flex \
+    gcc-32bit \
     gcc-c++ \
     gdk-pixbuf-devel \
     gettext-tools \
     git \
+    glibc-devel-32bit \
     gperf \
     intltool \
+    libgcc46-32bit \
+    libgomp46-32bit \
     libopenssl-devel \
+    libstdc++46-devel-32bit \
     libtool \
     make \
     openssl \
@@ -1030,14 +1040,17 @@ USE_OSGPLUGIN(&lt;plugin2&gt;)
     xz</pre>
 
     <p>
-    On 64-bit openSUSE, install also:
+    On 32-bit installs,
+    <pre>
+    gcc-32bit
+    glibc-devel-32bit
+    libgcc46-32bit
+    libgomp46-32bit
+    libstdc++46-devel-32bit
+    </pre>
+    are not required, however there are potential issues with
+    <a href="#issue-32-bit-systems">32-bit systems</a>.
     </p>
-    <pre>zypper install -R \
-    gcc-32bit \
-    glibc-devel-32bit \
-    libgcc46-32bit \
-    libgomp46-32bit \
-    libstdc++46-devel-32bit</pre>
 
     <h3 id="requirements-wsl">Windows Subsystem for Linux</h3>
 
@@ -1063,6 +1076,11 @@ USE_OSGPLUGIN(&lt;plugin2&gt;)
     MSDN Blog</a></li>
     </ul>
 
+    <h3 id="issue-32-bit-systems">Issues with 32-bit systems</h3>
+    32-bit systems
+    <a href="https://github.com/mxe/mxe/issues/1381#issuecomment-225459494">
+    may have insufficient virtual memory</a> to build all of MXE.
+
     <h3 id="issue-non-multilib">Issues without a 32-bit compiler</h3>
 
     <p>