Enable multi-module support for wasm-c-api (#426)

it is allowed that all imported functions and globals can be
linked by multi-module feature automatically or by wasm-c-api manually

doc/release_ack.md

@@ -0,0 +1,61 @@
+Major feature releases and contributors
+=========================================
+
+
+**May 07, 2019: WAMR first GitHub release**
+
+- Contributors: Wenyong Huang, Weining Lu, Lei Shi, Li Tian, Jizhao Zhang, Yi Zhang, Daoming Qiu, Xin Wang (Intel)
+
+**May 17, 2019: Application manager, WASM APP API, samples and test tools**
+
+- Contributors: Wenyong Huang, Weining Lu, Lei Shi, Li Tian, Jizhao Zhang, Yi Zhang, Daoming Qiu, Xin Wang (Intel)
+
+
+**May 23, 2019: Support AliOS Things**
+
+- Contributor: JinZhou Zhu (Alibaba)
+
+**May 24, 2019: Support memory usage profiler**
+
+- Contributors Wenyong Huang (Intel)
+
+**Jun 11, 2019: Add WASM APP API connection**
+
+
+- Contributor: Weining Lu (Intel)
+
+**Jun 10, 2019: Support VxWorks**
+
+- Contributor: Yiting Wang (WindRiver)
+
+**Aug 1, 2019: Add WGL graphic user interface API**
+
+- Contributor: Weining Lu
+
+**Aug 14, 2019: Add Docker support**
+
+
+- Contributor: beriberikix
+
+
+**Aug 14, 2019: WASM IoT app store demo**
+
+
+- Contributor: Luhanzhi Li, Jun Xu (Intel)
+
+
+**Aug 28, 2019: SGX support**
+
+
+- Contributor: Mic Bowman (Intel)
+
+
+**Sep 6, 2019: Mac platform support**
+
+
+- Contributor: Jonathan Dong (Alibaba)
+
+**Nov 2019: WASI support** (Intel)
+
+**Jan 2020: Ahead of time and Just-in-Time compilation support** (Intel)
+

doc/roadmap.md

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+
+# WebAssembly Micro Runtime Roadmap
+
+
+
+## Data serialization
+Evaluating using cbor as the default data serialization
+
+No plan yet.
+
+
+
+## Threading
+Plan: 2020 Q1
+
+
+
+## AssemblyScript Support and API
+
+Currently under evaluation
+
+
+