build: disable epoll support on solaris based systems

We have a report where the use of epoll breaks such systems. Disabling it for
now to make them work again. A deeper analysis is underway to understand this
better and maybe have epoll support later.

configure.ac

@@ -198,6 +198,11 @@ case "$host_os" in
       MODULE_ARCH="v-v_maj.v_min"
       MODULE_EXT=".dll"
    ;;
+   *solaris*)
+      have_solaris="yes"
+      MODULE_ARCH="v-v_maj.v_min"
+      MODULE_EXT=".so"
+   ;;
    *)
       MODULE_ARCH="v-v_maj.v_min"
       MODULE_EXT=".so"
@@ -461,7 +466,6 @@ AC_HEADER_TIME
 AC_CHECK_HEADERS([ \
 execinfo.h \
 mcheck.h \
-sys/epoll.h \
 sys/inotify.h \
 sys/signalfd.h \
 sys/types.h \
@@ -472,6 +476,10 @@ sys/auxv.h \
 asm/hwcap.h \
 ])
 
+if test "x${have_solaris}" != "xyes" ; then
+    AC_CHECK_HEADERS([sys/epoll.h])
+fi
+
 EFL_CHECK_PATH_MAX
 
 #### Checks for defines in headers