double-conversion: Build shared library

Currently, [Inkscape 1.x][1] and Qt 5.x fail to build.

    /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib64/libdouble-conversion.a(double-conversion.cc.o): relocation R_X86_64_32 against `.bss' can not be used when making a shared object; recompile with -fPIC

Instead of building the static library with `-fPIC` like [Debian
does][2], build the shared version of the library.

[1]: https://gitlab.com/inkscape/inkscape/issues/326
[2]: https://salsa.debian.org/science-team/double-conversion/blob/master/debian/rules#L43

double-conversion.be0

@@ -47,9 +47,10 @@ SRCURL[0]="https://github.com/google/double-conversion/archive/v${PKGVERSION}.ta
 #    bee_patch "${@}"
 #}
 
-#mee_configure() {
-#    bee_configure
-#}
+mee_configure() {
+    bee_configure \
+        -DBUILD_SHARED_LIBS=ON
+}
 
 #mee_build() {
 #    bee_build